Permutation-lock



J. R. SUNGAIL.

PERMUTATION LOCK.

APPLICATION FILED MAY 18. 1915.

1 ,320,806. Patented Nov. 4, 1919.

ATTOR N EY JOHN R.v SUNGAIL, OF GICERO, ILLINOIS.

PERMUTATION-LOCK.

menses.

Specification of Letters Patent.

i Patented Nov. 1, 1919.

Application filed May 18, 1916. Serial No. 98,375.

To all whomz't may concern:

Be it known that I, JOHN R. SUNGAIL, a citizen of the United States,residing at Cicero, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Permutation-Locks, ofwhich the following is a specification.

This invention relates to locks and more pail'lzicularly, to an improvedpermutation loc More particularly, this invention has reference toanarrangement of the tumbler plates and the locking bolt, which, when 1nproper position, will permit movement of the locking bolt, either to alocked or unlocked position.

A further improvement resides in the provision of a construction ofoperating knobs, whereby, when the lock is used in conjunction with a.door, the same may be actuated from the inside, irrespective of thetumbler plates.

Other improvements and novel details in the construction and arrangementof parts will be appreciated from thedetailed description below, whichis to be read in connection with the accompanying drawings forming apart thereof, and wherein I disclose preferred embodiments of theinvention for the purpose of illustration.

In the drawings,

Figure 1 is a section on the line 1-1 of Fig. 2, the bolt casing beingshown in full lines,

Fig. 2 is a transverse section through the lock showing it applied to adoor,

Fig. 3 is a rear elevation showing the knob whereby the lock may beactuated from the inside,

Fig. 4: is a longitudinal section through the bolt casing illustratingthe mounting and construction of the sliding locking bolt.

Referring more particularly to the. drawings, wherein like referencenumerals refer to corresponding parts throughout the views, I provide acircular supporting base 1 having its upper marginal edge beveled andprovided with an annular flange 2. A

V plurality of interiorly threaded openings 3 are arranged in the base 1and have bolts.

4 engaged therewith. The bolts 4: are in turn engaged with the flanges 5of a bolt casing 5, thus permitting the bolt caslng and base 1 to beaffixed to the door or other object, as designated at 6. A sleeve 7 isformed upon the supporting base 1 and has arranged thereupon a circularflange 8; The

sleeve has formed therein a longitudinal slot 7, the purpose of whichwill be subsequently apparent. A plurality of apertured rotatabletumbler plates indicated by the numerals 10, 11 and 12 are arrangedabout the sleeve 7 and are of various sizes, so as to constitute, whenin position, a substantially frusto-conical body. The outer marginaledges of the tumbler plates 10', 11 and 12 are beveled and provided withannular flanges generally indicated at 13, similar to flange 2 as formedupon the circular base 1. These flanges form seats for the tumblers. Toinsure independent rotation of the various tumbler plates, Washers 11are inserted therebetween. To provide antifrictional bearings,complementally disposed grooves are arranged in the adjacent faces ofthe tumbler plate 12 and the flange 8 in which balls 15 are placed.Rings 16, '17 and 18 are split so that the ends of each ring at thesplit are spaced apart to form a way. The rings are carried within theapertured tumbler plates 10, 11 and 12, as shown in Fig. 2- the purposeof which will be hereinafter described.

A rotatable spindle 19 is carried by the door 6 and has arrangedthereupon a flanged collar 20, which collar is engaged with the circularbase 1 in such manner as to permit of its rotation and preventlongitudinal movement thereof. The portion of the spindle 19 in front ofthe collar 20 is substantially oval in cross section and has formedthereupon a pair of arcuately shaped arms 21 and 21, which are rotatableinside of the sleeve 7. A head 22 having a beveled inner surface isarranged upon the extremity of the oval portion of the spindle-19. A

knob which is formed on the head 22 provides a means for rotating thespindle. A dog 2-1 is movable into the space 9 formed by the alined waysin the rings 16,17 and 18. It will be, observed in Fig. 2, that the dog24; is equal in length to the space 9. The dog 2% is beveled on thefront edge and bears against the beveled inner surface of the head 22.The beveled front portion of the dog 2% merges with a heel 24: which isadapted to ride beneath the similarly beveled under portion of one orthe other of the arcuately shaped arms 21 and 21.

The oval end of the spindle 19 is adapted to act as a cam on the dog 24.When the ways of the rings 16, 17 and 18 are in alinement to form thespace 9, the spindle 19 may be rotated because the dog 2 1 will moveupwardly into the slot 9. It will be observed in Fig. 1, that thearcuately shaped arms 21 and 21' are formed parallel with the curvatureof the oval along the major axis. It therefore follows that when thespindle 19 is rotated, the dog 2% will not be elevated until the end ofthe oval strikes the 'dog. This occurs at the same time that one or theother of the arcuate arms 21 or 21 move out of engagement with the dog.The spindle 19 may thus rotate freely and the dog 2% will simplyreciprocate as the high and low portions of the oval move thereunder.

A pinion 25 is carried upon the opposite extremity of the spindle 19 andhas formed thereupon a hollow cylindrical knob 26. It will be notedthat, that portion of the pinion 25' adjacent to the, knob 26, isstepped, to permit the ournaling thereof within the outer wall of thebolt casing 5. A stop pin 27 is carried upon the inner face of the knob26 and is engaged by a disk 28, which disk is secured to the spindle 19by a set screw 29. A portion of the disk 28 is cut away to provideshoulders 30 and 30 for engagement with the stop pin 27.

Inasmuch as the pinion 25 and its knob 26 are loosely mounted upon thespindle 19, it will be apparent that when the knob is turned and thestop pin 27 is engaged with one of the shoulders 30 or 30, its movementwill be stopped. However, it will be noted, that during the movement ofthe knob the pinion will be rotated, and thus cause the sliding bolt,which will be hereinafter described, to be moved to a locked or unlockedposition.

A bolt 31 1s slidably mounted wlthin the casing 5 and comprises a bodyhaving one end thereof reduced to provide an extension 32 adapted toengage a keeper and a laterally extended arm 33 having av rack arrangedupon its lower face. The rack arm 33 has a supporting leg 3% formedthereon, whereby the arm may at all times be held in close engagementwith the upper portion of the casing 5. 'A slot 35 is formed in theextremity of the arm 33 and receives thereinto a pin 36, which pin, iscarried by the casing 5 and against which abuts one end of an expansiblecoiled spring 37, the remaining end of the coiled spring being engagedwith the rear wall of the casing 5. It is to be also noted, that therack formed upon the lower face of the arm 33, is constantly enmeshedwith the pinion 25.

The beveled portions of the tumbler plates 10, 11 and 12 and the base 1has graduations. The graduations allow the tumblers to be moved to aposition whereby the ways of the rings 16, 17 and 18 may be. moved intoan alined position with each other. To denote the zero point,'thebeveled portions of the tumbler plates have pins 38.

To operate the bolt 32 from the inside, irrespective of the combination,it is only necessary that the knob 26 be turned, which movement will betransmitted to. the elongated gear 2-5 which is enmeshed with the rackas arranged upon the lower face of the arm 33 and thus cause that memberto be retracted or moved to its distended position.

I therefore particularly point out p and distinctly claim as myinvention:

In a device of the character described, the combination of asupportingmeans, a rotatable spindle carried by said supporting means, means forrotating said spindle, an arcuate arm formed on said spindle, said armhaving a curved channel portion formed in its front surface adjacent thesurface of said spindle, an elongated dog resting upon said arm andengaging the front and rear surfaces thereof, the said dog having a heelupon its front portion fitting within the channel of the said arm, meansfor holding said dog against side movement and rotatable tumbler plateshaving receiving ways therein, whereby when the tumblers are moved tobring the ways into alinement with the dog, the spindle ma I be rotatedand move the dog into said ways, although when said spindle is rotatedto its original position the engagement of the arm with he heel of thedog will retract the dog from said ways, thus permitting the tumblers tobe easily turned to again lock the device.

In testimony whereof I affix my signature in presence of two witnesses.

' JOHN R. SUNGAIL. Witnesses:

R. ANDERSON, W. L. CUREToN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

' Washington, I). C. i

